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dc.contributor.authorLavery, Andone C.  Concept link
dc.contributor.authorChu, Dezhang  Concept link
dc.contributor.authorMoum, James N.  Concept link
dc.identifier.citationICES Journal of Marine Science: Journal du Conseil 67 (2010): 379-394en_US
dc.description© 2009 The Authors. This article is distributed under the terms of the Creative Commons Attribution Non-Commercial License. The definitive version was published in ICES Journal of Marine Science: Journal du Conseil 67 (2010): 379-394, doi:10.1093/icesjms/fsp242.en_US
dc.description.abstractIn principle, measurements of high-frequency acoustic scattering from oceanic microstructure and zooplankton across a broad range of frequencies can reduce the ambiguities typically associated with the interpretation of acoustic scattering at a single frequency or a limited number of discrete narrowband frequencies. With this motivation, a high-frequency broadband scattering system has been developed for investigating zooplankton and microstructure, involving custom modifications of a commercially available system, with almost complete acoustic coverage spanning the frequency range 150–600 kHz. This frequency range spans the Rayleigh-to-geometric scattering transition for some zooplankton, as well as the diffusive roll-off in the spectrum for scattering from turbulent temperature microstructure. The system has been used to measure scattering from zooplankton and microstructure in regions of non-linear internal waves. The broadband capabilities of the system provide a continuous frequency response of the scattering over a wide frequency band, and improved range resolution and signal-to-noise ratios through pulse-compression signal-processing techniques. System specifications and calibration procedures are outlined and the system performance is assessed. The results point to the utility of high-frequency broadband scattering techniques in the detection, classification, and under certain circumstances, quantification of zooplankton and microstructure.en_US
dc.description.sponsorshipThe work was supported by the US Office of Naval Research (Grant # N000140210359).en_US
dc.publisherOxford University Pressen_US
dc.rightsAttribution-NonCommercial 2.5 UK: England & Wales*
dc.subjectBroadband acoustic scatteringen_US
dc.subjectInternal wavesen_US
dc.subjectOceanic microstructureen_US
dc.titleMeasurements of acoustic scattering from zooplankton and oceanic microstructure using a broadband echosounderen_US

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Attribution-NonCommercial 2.5 UK: England & Wales
Except where otherwise noted, this item's license is described as Attribution-NonCommercial 2.5 UK: England & Wales